 | | Re: Other batteries...
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| A gell cell battery is charged via a maximum allowed charging voltage. If the charger doesn't limit the charging voltage to less than 14 volts it will shorten the life of a 12v gell cell considerably. A Ni-Cad uses a constant charging current, but (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
| | | | | Re: motor port problem .
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| hi , Attached from the previous mail, I have already solved the problem listed below. It is the 7404 is damaged .What causes it? Any ideas? RIght now this problem that melted my socket on the L293, the supply I used is 12V supply to my 2 DC motors. (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
| | | | | Re: motor port problem .
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| hi, I have a big problem. I followed the method of yours that just lift up pin 8 of one L293 and wirewrapped it. The positive supply is wirewrapped to pin 8 . How about the negative supply of the batteries should insert or wirewrapped? I inserted (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
| | | | | Re: Miniboard/download mode
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| (...) Check the voltage at the MOBD pin on the chip (not the socket, not the bottom of the board). If it is 5V with the switch in the one position, and ground (0V) in the other position, you may have a defective chip. Otherwise I'd guess open (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
| | | | | Miniboard/download mode
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| Hi all, I have a miniboard I built recently that won't go into download mode. In the note called "mb-debug.txt" on ftp://Cherupakha.media.mit from Chuck McManis he describes the exact problem I have. "If the RED LED light ups, or the motor LEDS (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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